Expansion-nut.



PATENTBD FEB. 5, 1907.

IIIIIIIIII I III UNITED STATES PATENT OFFICE.

JOHN S. HANLON, OF CHICOPEE, MASSACHUSETTS. 1

EXPANSION-NUT.

Specification of Letters Patent.

Patented. Feb. 5, 1907.

To all whom it may concern:

Be it known that I, JOHN S. HANLON, a citizen of the United States ofAmerica, re.- siding at Willimansett, in Chicopee, in the count ofHampden and State of Massachusetts, ave invented new and useful Imrovements in Expansion-Nuts, of which t e following is a specification.

This invention relates to the class of improvements in expansion-nutswhich are used to rigidly secure together two pieces of material of anysuitable kind, as wood and iron, iron and masonry, or concrete andwood,

&c.; and it has for its object to provide a means which can be quicklyand easily secured in place to attain the desired result.

The invention is fully illustrated in the accompanying drawings, andmore particularly defined by the scope of the claims.

In the drawings forming part of this application, Figure 1 is asectional View of the improvement as used. Fig. 2 is a longitudinalsectional view of the improvement. Fig. 3

is a vertical section on the line 3 3, Fig. 2,

taken through the key and barrel of the nut. Fig. 4 is a sectional viewof a modification through the longitudinal slot in the barrel, showingthe key after it has been pushed outwardly by the bolt after it has beenscrewed into the barrel and also showing holding-teeth on the bottom ofthe barrel. Fig. 5 is a vertical section through the barrel on the line5 5 Fig. 4. Fig. 6 is a bottom plan view of the modification of thebarrel, showing teeth or lugs diametrically opposite the key.

Referring to the drawin s, a designates a part of the material in whicthe barrel of the improved nut is to be inserted.

' 1) indicates the bottom of the hole made by an ordinary bit in casethe nut is to be inserted in wood.

. 0 designates the barrel of the nut, which is generally of iron or anysuitable material.-

his barrel is internally threaded for a eater portion. of its length, asshown, while 5 designates the bored-out end of the barrel of largerdiameter than the threaded portion. e indicates a vertical slot, whichis cut lengthwise of the barrel and o ening into the threaded portionand in whic is adapted to be inserted a key f, made of iron, steel, orany suitable material. The shape of this key is triangular, the lowerside of which has a smooth surface, (designated by 9,) as clearly shownin the drawings, while the upper edge ard size, with a squared head(shown in Fig. 1) and adapted to be turned by a wrench in the ordinarymanner, while Fig. 4 shows I the ordinary machine-made bolt having ahead is, with a transverse slot m therein when the bolt is to be turnedby a screw-driver.

Referring particularly to Fig. 2, it is seen that the bolt t is turnedoutwardly, so that the teeth of the key f are flush with the outer edgeor periphery of the hole of the barrel. W en the key f and bolt '5 arein this position, the nut can be readily inserted into a circularopening, which has previously been made in the woodwork or masom'gg ofthe structure, to which it is desired that a piece or attachment, as p,(shown in Fig. 1,) may be rigidly secured.

In the operation of this expansion-nut upon turning the bolt i into thebarrel '0 the threads (1 thereon will slightly embed themselves into thekey f, while at the same time the key f is forced outwardly by reason ofthe threaded end of the bolt engaging the inclined surface of the keywhen it stands in this position, as shown in Fig. 2, and by thecontinued pressure of the bolt & thereon the key is forced or embeddedinto the material, whatever it may be--as wood, brickwork, or masonryconstructionthe bolt '1', being rotated until the head is brought firmlyagainst the piece or attachment 1). In forcing the key f outward thethreads on the end of the bolt are necessarily mutilated when the sameare embedded into the key. The slot 6 is preferably made by milling,which 0 eration produces at the same time the inc ined shoulders s andt. The slot e ismilled of such a length that the inclined shouldersserve the purpose of preventing the key f from dropping inward into thebarrel. When the bolt is screwed into the barrel, the forward end of thekey is first moved outward, the rear shoulder t preventing the key frombeing moved rearward by the bolt. When the forward end of the key hasbeen raised for a certain distance by the inward movement of the bolt'11, the key is rocked about the forward end of the bolt, throwing therear end of the key outward into the position shown in Fig. 4. Thisrocking movement of the key is produced by the forward end of the keybeing elevated first until sufficient esist IOO ance the material qtoits-further-movement is met, when this resistance will serve to rock thekeyon the end of. the bolt i,as thesame is screwed into the barrel tothrow out the rear end of the same, the key then assuranmg the positionshown in Flgs. I and 4. These two shoulderss and I; serve the further.

purpose of preventing the nut from being drawn outward or forced inwardafter the bolt has elevated the key to the position shown. Theseshoulders serve to lock the".

teeth or serrations 'u on the opposite sideof the same, the purpose ofthese-teeth: being that as the key f is forced outwardly on one side ofthe barrel the teethu on the" opposite side of the barrel are at thesame time embedded in the material on that side of the barrels Thisconstruction has the advan-' tage of producing an even pressure onopposite sides of the barrel.

One of the advantages of this improved expansion'nut is that it isadapted to beused with bolts of ordinary standard gage.

One of the advantages of the enlarged bored end (1 of the barrelc isthat it provides a receptacle" in which the loose material'or borings ofthe. hole may be collected, and

thus avoids exercisin any great care by the workman in thoroug ycleaning after the hole is bored or drilled.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

1. In an expansion-nut, a barrel internally threaded for a eater part ofits length and having a slot with inclined walls intersecting thethreaded ortion of the barrel midway of its length an in one side of thebarrel, a tria lam-shaped keyhavingteethonthe outer surface thereof andremovably inserted in said slot and engaging the'inclined walls, athreaded longitudinally-movable bolt for engaging said key and saidinternal] -threaded arrel, the inner end of the bolt orcing the keyoutward and retaining the same in its outward position.

2. In an expansion-nut, a barrel, 9. longitudinally-threaded aperturetherein, a slot midway of the length of the barrel and having aninclined wall, a triangular-shaped key loosely mounted in said slot andengaging said inclined' wal'l, a threaded bolt for moving said keyoutward.

3. In an expansion-nut, a barrel having an internally-threaded openingtherethough, a 5 longitudinal slot having two inclined walls andfacing'each other in opposite directions, ,7 said slot opening into saidthreaded o ening,

a key substantially of a wedge shape ocated in said slot, one angle orapex of said key en- 7 gaging one inclined wall of said slot, andanother angle or apex of said key engaging theother inclined wall ofsaid slot when in normal position whereby the'key is revented fromdropping into the barrel, an whereby 7 5"- the rear wallserves tolockthe key to thebarrel, when extended.

4. In an ex ansion-nut, a barrel, a threaded aperture t erethrough for agreater portion of its length, a slot intersecting the threaded apertureand having two inclined. walls, a triangular wedge located in said slotand extending into the threaded aperture, two-sides of the wedgeengaging said inclined walls and one edge of said Wedge having 5 teethoppositely located from the threade part of t e barrel, and teeth on theopposite side of said barrel, the teeth on said Wedge and said barrelpointing in the same direction, andmeans engaging the threaded aperturefor forcing said wedge outwardly.

JOHN S. HANLON.

Witnesses-z HENRY A. OHAPIN. HARRY W. BOWEN.

